Pinpoint Test BA: DTC U0253:00

Instrumentation, Message Center and Warning Chimes

Pinpoint Test BA: DTC U0253:00

Normal Operation

- DTC U0253:00 (Lost Communication With Accessory Protocol Interface Module: No Sub-Type Information)- sets in the Instrument Panel Cluster (IPC) if data messages received from the Accessory Protocol Interface Module (APIM) over the High Speed Controller Area Network (HS-CAN) are missing for 1 minute or more. For a complete list of all network messages, refer to Information Bus.

This pinpoint test is intended to diagnose the following:

- APIM (Accessory Protocol Interface Module)

- IPC (Instrument Panel Cluster)

PINPOINT TEST BA : DTC U0253:00

BA1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Check the clock display.

Does the clock display operate?

Yes
The system is operating normally at this time. The DTC may have been set due to the APIM (Accessory Protocol Interface Module) still booting, high network traffic or an intermittent fault condition.

No
GO to BA2.

BA2 CHECK THE COMMUNICATION NETWORK

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: Network Test.

- Carry out the network test.

Does the APIM (Accessory Protocol Interface Module) pass the network test?

Yes
GO to BA3.

No
REFER to Information Bus.

BA3 RETRIEVE THE RECORDED DTCs FROM THE APIM (Accessory Protocol Interface Module) SELF-TEST

- Check for recorded DTCs from the APIM (Accessory Protocol Interface Module) self-test.

Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
REFER to Accessories and Optional Equipment.

No
GO to BA4.

BA4 RETRIEVE THE RECORDED DTCs FROM THE IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded DTCs from the IPC (Instrument Panel Cluster) self-test.

Is DTC U3003:16 or DTC U3003:17 recorded?

Yes
For DTC U3003:16, GO to Pinpoint Test BC Pinpoint Test BC: DTC U3003:16.

For DTC U3003:17, GO to Pinpoint Test BD Pinpoint Test BD: DTC U3003:17.

No
GO to BA5.

BA5 RECHECK THE IPC (Instrument Panel Cluster) DTCs

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the Programmable Module Installation (PMI) or the PMI (Programmable Module Installation) may not have been carried out.

- Clear the DTCs.

- Wait 10 seconds.

- Repeat the IPC (Instrument Panel Cluster) self-test.

Is DTC U0253:00 still present?

Yes
GO to BA6.

No
The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

BA6 CHECK FOR DTC U0253:00 SET IN OTHER MODULES

- Clear all DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Enter the following diagnostic mode on the scan tool: Self-Test.

- Retrieve the continuous memory DTCs from all modules.

Is DTC U0253:00 set in the Audio Control Module (ACM)?

Yes
INSTALL a new APIM (Accessory Protocol Interface Module). CLEAR the DTCs. REPEAT the self-test.

No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.